| blob | ed04647c84066f5b61d3c3da50ff58f09c3402a1 |
1 # RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
2 # RUN: -experimental-debug-variable-locations \
3 # RUN: -run-pass=phi-node-elimination,livedebugvars,greedy,virtregrewriter \
4 # RUN: | FileCheck %s
5 #
6 # Like phi-through-regalloc.mir, pass a PHI node into register allocation, and
7 # test that it correctly comes out, in a stack slot. Fifteen spurious PHIs have
8 # been added to force the register allocator to spill one.
10 --- |
11 ; ModuleID = 'promoted.ll'
12 source_filename = "test.c"
13 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
14 target triple = "x86_64-unknown-linux-gnu"
16 define dso_local i32 @foo(i32 %bar, i32 %baz) !dbg !7 {
17 entry:
18 ret i32 0, !dbg !19
19 }
21 declare dso_local i32 @ext(i32)
23 ; Function Attrs: nounwind readnone speculatable willreturn
24 declare void @llvm.dbg.value(metadata, metadata, metadata)
26 !llvm.dbg.cu = !{!0}
27 !llvm.module.flags = !{!3, !4, !5}
28 !llvm.ident = !{!6}
30 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
31 !1 = !DIFile(filename: "test.c", directory: ".")
32 !2 = !{}
33 !3 = !{i32 7, !"Dwarf Version", i32 4}
34 !4 = !{i32 2, !"Debug Info Version", i32 3}
35 !5 = !{i32 1, !"wchar_size", i32 4}
36 !6 = !{!"."}
37 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
38 !8 = !DISubroutineType(types: !9)
39 !9 = !{!10, !10, !10}
40 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
41 !11 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 2, type: !10)
42 !12 = !DILocation(line: 0, scope: !7)
43 !13 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 2, type: !10)
44 !14 = !DILocalVariable(name: "either", scope: !7, file: !1, line: 3, type: !10)
45 !15 = !DILocation(line: 4, column: 7, scope: !16)
46 !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 7)
47 !17 = !DILocation(line: 4, column: 7, scope: !7)
48 !18 = !DILocation(line: 0, scope: !16)
49 !19 = !DILocation(line: 9, column: 3, scope: !7)
51 ...
52 ---
53 name: foo
54 alignment: 16
55 tracksRegLiveness: true
56 debugInstrRef: true
57 registers:
58 - { id: 0, class: gr32 }
59 - { id: 1, class: gr32 }
60 - { id: 2, class: gr32 }
61 - { id: 3, class: gr32 }
62 - { id: 4, class: gr32 }
63 liveins:
64 - { reg: '$edi', virtual-reg: '%1' }
65 - { reg: '$esi', virtual-reg: '%2' }
66 frameInfo:
67 maxAlignment: 1
68 adjustsStack: true
69 hasCalls: true
70 machineFunctionInfo: {}
71 body: |
72 ; CHECK-LABEL: bb.0:
73 ; CHECK: renamable $ebp = COPY $edi
74 ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, killed renamable $ebp
75 bb.0:
76 successors: %bb.2(0x50000000), %bb.1(0x30000000)
77 liveins: $edi, $esi
79 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !12
80 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !12
81 %2:gr32 = COPY killed $esi
82 %1:gr32 = COPY killed $edi
83 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
84 %3:gr32 = MOV32r0 implicit-def dead $eflags
85 $edi = COPY killed %3, debug-location !15
86 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15
87 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
88 %4:gr32 = COPY killed $eax, debug-location !15
89 %10:gr32 = MOV32ri 0
90 %11:gr32 = MOV32ri 1
91 %12:gr32 = MOV32ri 2
92 %13:gr32 = MOV32ri 3
93 %14:gr32 = MOV32ri 4
94 %15:gr32 = MOV32ri 5
95 %16:gr32 = MOV32ri 6
96 %17:gr32 = MOV32ri 7
97 %18:gr32 = MOV32ri 8
98 %19:gr32 = MOV32ri 9
99 %20:gr32 = MOV32ri 10
100 %21:gr32 = MOV32ri 11
101 %22:gr32 = MOV32ri 12
102 %23:gr32 = MOV32ri 13
103 %24:gr32 = MOV32ri 14
104 TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15
105 JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17
106 JMP_1 %bb.1, debug-location !17
108 bb.1:
109 %30:gr32 = MOV32ri 0
110 %31:gr32 = MOV32ri 1
111 %32:gr32 = MOV32ri 2
112 %33:gr32 = MOV32ri 3
113 %34:gr32 = MOV32ri 4
114 %35:gr32 = MOV32ri 5
115 %36:gr32 = MOV32ri 6
116 %37:gr32 = MOV32ri 7
117 %38:gr32 = MOV32ri 8
118 %39:gr32 = MOV32ri 9
119 %40:gr32 = MOV32ri 10
120 %41:gr32 = MOV32ri 11
121 %42:gr32 = MOV32ri 12
122 %43:gr32 = MOV32ri 13
123 %44:gr32 = MOV32ri 14
125 ; CHECK-LABEL: bb.2:
126 bb.2:
127 %0:gr32 = PHI %1, %bb.0, %2, %bb.1, debug-instr-number 1, debug-location !18
128 %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18
129 %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18
130 %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18
131 %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18
132 %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18
133 %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18
134 %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18
135 %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18
136 %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18
137 %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18
138 %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18
139 %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18
140 %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18
141 %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18
142 %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18
144 DBG_INSTR_REF !14, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !12
145 ; CHECK: DBG_PHI %stack.1, 1, 32
146 ; CHECK: renamable $eax = MOV32rm %stack.1,
147 ; CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)
148 $eax = COPY killed %0, debug-location !19
149 RET 0, killed $eax, debug-location !19
151 ...